Hey pal, can you do another spell for me (Shield of Blessing)?
Shield of Blessing: A magical shield made up of psychic energies, arcane essences and elemental magics. While under its effects, the unit will gain additional armor, additional hit point regeneration, engulf energies with damage enemies nearby and immunity to certain effects such as sonic wave attacks and mind control.
If someone cast Shield of Blessing on an already mind controlled unit, the mind controlled unit stays mind controlled until the mind controller dies or the mind controller breaks the link.
If the psychic link is broken, the effects of the Shield of Blessing still remains.